Rivet-sticker.



A. CLAIBORNE.

} RIVET STICKER. APPLICATION FILED SEPT-26,1916- 1,230,563 Patented June 19, 1917.

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1 -ATNT ALEXANDER GLAIBORNE, F PALMS, CALIFORNIA.

RIVET-STIOKER.

Specification of Letters Patent. Patented June 19, 1917.

Application filed September 26, 1916. Serial N 0. 122,289.

To all whom it may concern:

Be it known that I, ALEXANDER CLAIBORNE, a citizen of the'United States, residing at Palms, in the county of Los Angeles' and State of California, have invented a new lowing is a specification.

My invention relates to the sheet metal and useful Rivet-Sticker, of which the folworkers art and particularly to the art of e5 by the line 66 of Fig. 2.

riveting sheet metalfor various purposes. It has a specific application in the art of producing riveted pipe and the drawings illustrate a machine adapted'to rivet such pipe. The principal object of the invention is to provide a. method and apparatus by which rivets may be delivered to the material to be riveted as desired. In the art of 'manufacturing' pipe it is necessary to deliver the rivets to the interior of-the pi e, and my invention is particularly applicable for such a purpose.

In the drawings which are for illustrative purposes only:

Figure 1 is a plan view of my invention.

plane represented Fig. 7 ,is a section on a plane represented by the line 77 of Fig. 4, this plane being viewed in the direction of the arrows.

. trated in the drawings a support 11 is provided, this support being quite massive and being secured by foundation bolts 12 to a substantial foundation 13. Secured in the side of the support 11 is a mandrel 14. The mandrel 14 is of cylindrical section as shown in Fig. 6 and is small enough in diameter 'to be readily inserted in the smallest size of pipe which it is desired to rivet, such a pipe being shown in Fig. 2 at 15. The mandrel is grooved out as shown at 16 and a rivet feed pipe 17 extends through the groove, this rivet feed pipe 17 has a curved end 18 terminating in an aperture 19 at the top of the .mandrel near the outer end thereof. The

rivet feed pipe 17 forms a rivet feeding In the modification of my invention illuschannel and extends through an opening 20 in the support 11 and connects into avalve body 21, this valve body being provided with a bracket 22 which is secured by means of bolts 23 to the side of the support 11 opposite to the mandrel 14.

Securedin the top of the valve body 21 is a magazine 30, this magazine consists of a channel member 31 of such a size as to receive the heads of rivets 32 as shown in Fig. 4 and Fig. 7. A rivet receiving opening 33 is provided in the top of the rivet feed pipe 17 directly in front of the magazine 30 and in such a position that the rivet 32 will pass therethrough into the feed pipe 17. A feed rod 34 is provided with a bent end 35' which extends under the lower rivet of the series in the magazine 30 and normally prevents the lower rivet from passing through. the

opening 33. This feed rod 34 extends back and is connected into a clevi s 36. Secured in the clevis 36 is a valve stem 37 which extends through a stufling box 38 and is' rigidly connected to a valve 39. The valve 39 slides in a cylindrical opening formed in the valve body 21, and also extends into the end of the rivet feed pipe 17 stopping at a point directlybelow the edge of the opening 33. The valve 39 is provided with an L shaped opening 40, one end of which is centrally located with respect to the rivet feed pipe 17 and the other end of which is at right angles to the end of the rivet feed pipe 17 and so located that it registers with a compressed air port when the valve is moved to its forward position as will presently be explained. The compressed air port is fed with compressed air or steamfrom anair pressure pipe 41 which is supplied with compressed air from any suitable source not shown.

The clevis is pivoted by means of a pin 45 in an. upper bell crank 46, this bell crank being pivoted on a pin 47 on the bracket 22. Pi'voted on a pin 48 on the other arm of the bell crank 46 is a vertical rod 49. The lower end of the vertical rod 49 is pivoted 011 a pin 50 carriedon one arm of a lower bell crank 51 which is pivoted on a pin 52- carried in suitable bearings 53. attached to the sup-- port 11. A pin 54 is provided in the other arm of the bell crank 51 and a horizontal rod 55 is pivoted thereon, the other end of this horizontal'rod being pivoted on a pin 56 of a treadle lever 57. The treadle lever 57 is pivoted on a pin 58 carried in bearings on a .i

erations .than that of-riveting pipe.

treadle plate 59. A spring 60 tends to hold the moving parts in the position shown in the drawing. A treadle 61 is formed on the treadle lever 57 and is so located as to be convenient to the foot of the operator when the pipe is being riveted.

The method of operation of the invention is as follows: I

The pipe 15 is slipped over the mandrel 1 1 so that the hole in which it is desired to place a rivet is over the aperture 19. The operator then presses down on the treadle 61 moving the upper bell crank 46 in a counterclockwise direction as viewed in Fig. 2, this movement being accomplished by means of the vertical rod 49, the lower bell crank 51, and the horizontal rod 55. This movement accomplishes two things. First the valve 39 moves'forward closing the opening 33 and throwing the opening 40 into communication with the air supply pipe 41.

The rivet feed pipe 17 is immediately subjected to air pressure and a rivet resting therein is forcibly projected through the rivet feed pipe 17 under the influence of air pressure, passing through the curved end 18 into aperture 19 and into the hole in the pipe which it is desired to rivet. The operator immediately slides the pipe along the mandrel 14 and lines up the next hole which he wishes to rivet with the aperture 19. The lower rivet of the series of rivets 32 has been released by the forward movement of the end 35 of the feed rod 34 and lies upon the top of the valve body 39. As the operator releases the treadle 61 the spring 60 throws the various parts back to their initial position. As the valve body 39 moves into the "position shown in Fig.4 and Fig. 5 the supply of compressed air is shut off and the opening 33 is cleared, the rivet which has been lying in that opening on top of the valve body 39 dropping into the end of the rivet feed pipe 17 ready for another operation. In practice the rivets may be placed as fast as the operatorcan move the pipe and operate the treadle. The pipe may be riveted either along a longitudinal seam or around a circumferential seam. The rivets "do not fit tightly in the rivet feed pipe 17 and the compressed air escapes around the head of the rivet, so that the rivet floats in a current of moving air. Thisvis important as it tends to keep the rivet in the proper position and tends to center it in the hole in the .pipe even if this hole is not accurately lined up with the aperture 19. Obviously my m vention may be applied to other rivetingI opt is pipe as by be quic y riveted at especially applicable to rivetin its means long pipe can a very small cost.

1 claim as my invention 1. A rivet sticker for placing rivets in holes in sheet metal members comprising a nasoses theoperator can readily aline the rivet hole in which it is desired to place a rivet with said aperture; walls forming a rivet feeding channel terminating at one end at said aperture; means for placing a rivet at the other end of said rivet feeding channel; and means for forcing compressed air through said channel in such a manner as to deliver said rivet to said aperture.

3. A. rivet sticker for placing rivets in holes in sheet metal pipe comprising a mandrel over which said pipe may be fitted, said mandrel having an aperture so placed that the operator can readily aline the rivet hole in which it is desired to place a rivet with saidaperture; walls forming a rivet feeding channel terminating at oneend at said aperture, and having a rivet receiving 0 ening at theother end thereof; means for eeding a single rivet through said rivet receiving opening into said rivet feedin channel; means for closing said rivet receiving opening; and means for admitting compressed air into said rivet feeding channel in such a manner as to blow said single [rivet through said rivet feeding channel and said aperture.

4. A rivet sticker for placing rivets in holes in sheet metal pipe comprising a man-- drel over which said pipe may be fitted, said mandrel having an aperture so placed that the operator can readily aline the rivet hole in which it is desired to place a rivet with said aperture; walls forming a rivet feeding channel terminating at one end at said aperture, and having a rivet receiving 0 ening at the other end thereof; means for ceding a single rivet through said rivet receiving opening into said rivet feeding channel; and a valve for closing said rivet receiving opening and admitting compressed air into said rivet feeding channel in such a manner as to blow said single rivet through said rivet feeding channel and said aperture.

5. In a rivet sticker a support; a horizontal mandrel rigidly secured to said support and having an aperture in its upper side near its outer end and a rivet feeding channel terminating in said aperture; a valve body having a central opening-connected to said rivet-feeding channel, said.

rivet feeding channel having a rivet receiving opening in :its top near its junction with said valve body; means for supplying compressed anto a compressed air port in said valve body; a valve in said valve body so pressed air to a compressed air port in said shaped that it closes said rivet receiving valve body; a valve in said valve body so 20 opening when it is moved forward .and imshaped that it closes said rivet receiving Inediately thereafter connects the end of opening when it is moved forward and imsaid rivet feeding channel with said port; mediately thereafter connects the end of said and means for feeding a rivet through said rivet feeding channel with said port; a rivet rivet receiving port Whenever said valve is feeding magazine adapted to hold a supply :5 moved backward. of rivets; and means for releasing one of 6. In a rivet sticker a support; a horithese rivets into said rivet receiving opening zontal mandrel rigidly secured to said Supat each complete actuation of said valve. port and having an aperture in its upper 7. That step in the art of riveting sheet side near its outer end and a rivet feeding metal pipe which consists in blowing the 30 channel terminating in said aperture; a rivets through an aperture in a mandrel into valve body having a central opening conthe holes to be riveted. nected to said rivet feeding channel, said In testimony whereof, I have hereunto set rivet feeding channel having a rivet receivmy hand at Los Angeles, California, this ing opening in its top near its junction with 21st day of September, 1916.

said valve body; means for supplying com ALEXANDER CLAIBORNE. 

